Hello.
I'm curious if you're planning to release Allegro 5 binary package for MSVC12?
And if yes, when will it be avaiable?

Michał Cichoń builds the Windows binaries. You'll have to ask him personally or hope he sees this thread.

If you are interested in allegro 5.0.10, binaries are on this website.
EDIT: Find my 5.1 binaries attached, I'm not currently using them, though, since I'm still using 5.0.10, but they should work alright. Tell me if you have any problems.
Only monolith version.

There you go:

allegro-5.0.10-msvc-12.0.7z