Aufstieg und Niedergang der rømischen Welt..

On the third page of my Resource Pages for Biblical Studies I have a link to a German site providing information about the contents of the various volumes of ANRW. Now I can also point to another site that even provides info about the structures of the various articles.
Those being more optimistic that I, would probably also ask when the articles too are published on the web. .... I do think we will have to wait for that. But in the meantime, the following links provide great help in searching for relevant articles in the many volumes of the ANRW.

The main site for ANRW is here. If using their search engine, looking for Philo, you will find 15 articles more or less dealing with Philo of Alexandria.

Then, and that is what I discovered rquite recently, at The Institute for the Classical Tradition (ICT) at Boston University, affiliated with the Department of Classical Studies, you will find the following:
Index page for ANRW. This page includes links to Volumes in Print, and Volumes in Preparation.Furthermore, and this is what makes this site more helpful than the one mentioned above, is the possibility of having a look at the structures (=list of contents) of the individual articles. I have provided links to the List of contents of each of these articles listed below. Just click on the name of the authors below, and you will get into the list of contents for the various articles.
Barraclough, R., Philo’s Politics. Roman Rule and Hellenistic Judaism II.21.1 (1984) 417-553
Borgen, P., Philo of Alexandria. A Critical and Synthetical Survey of Research since World War II II.21.1 (1984) 98-154
Cazeaux, J., Philon d’Alexandrie, exégète II.21.1 (1984) 156-226
Conley, Th.M., Philo’s Rhetoric: Argumentation and Style II.21.1 (1984) 343-371
Hilgert, E., Bibliographia Philoniana 1935-1981 II.21.1 (1984) 47-97
Kraus Reggiani, Clara, I rapporti tra l’impero romano e il mondo ebraico al tempo di Caligola secondo la ‘Legatio ad Gaium’ di Filone Alessandrino II.21.1 (1984) 554-586
Mack, B.L., Philo Judaeus and Exegetical Traditions in Alexandria II.21.1 (1984) 227-271
Pearson, B.A., Philo and Gnosticism II.21.1 (1984) 295-342
Sandmel, S., Philo Judaeus: An Introduction to the Man, his Writings, and his Significance II.21.1 (1984) 3-46
Savon, H., Saint Ambroise et saint Jérôme, lecteurs de Philon II.21.1 (1984) 731-759
Spicq, C., O.P., L’Épître aux Hébreux et Philon: Un cas d’Insertion de la littérature sacrée dans la Culture profane du Ier siècle (Hebr. V,11-VI,20 et le ‘De Sacrificiis Abelis et Caini’ de Philon II.25.4 (1987) 3602-3618
Terian, A., A Critical Introduction to Philo’s Dialogues II.21.1 (1984) 272-294
Trisoglio, F., Filone Alessandrino e l’esegesi cristiana. Contributo alla conoscenza dell’influsso esercitato da Filone sul IV secolo, specificatamente in Gregorio di Nazianzo II.21.1 (1984) 588-730
Winston, D., Philo’s Ethical Theory II.21.1 (1984) 372-416.

These may also be of interest to you:
LEASE, G. (Santa Cruz, Calif.) Jewish Mystery Cults since Goodenough
HAY, D. M. (Cedar Rapids, Iowa) The Psychology of Faith in Hellenistic Judaism
RIAUD, J. (Paris) Les Thérapeutes d'Alexandrie dans la tradition et dans la recherche critique jusqu'aux découvertes de Qumran
CHARLESWORTH, J. H. (Princeton, N. J.) Jewish Interest in Astrology during the Hellenistic and Roman Period
Tov, E. (Jerusalem) Die griechischen Bibelübersetzungen

The following articles from another volume may also be relevant for those interesting in the social world of Alexandria at the time of Philo:
KÁKOSY, L. (Budapest) Probleme der Religion im römerzeitlichen Ägypten
HUZAR, E. G. (East Lansing, Mich.) Emperor Worship in Julio-Claudian Egypt
HEINEN, H. (Trier) Vorstufen und Anfänge des Herrscherkultes im römischen Ägypten
RITNER, R. (Chicago, Ill.) Egyptian Magical Practice under the Roman Empire: the Demotic Spells and their Religious Context

I do think the ANRW has some very, very informative articles. The info above may help you to find what you need.