Capcom Unity has details on the second beta test for Street Fighter V, which will be the first chance for PC gamers to test the Windows edition of the game and cross platform play between the PC and PS4 editions of the fighting sequel. This will run from October 22nd through October 25th (subject to change) and those who want guaranteed access must preorder the game. Here's are the details pertinent to PC owners:

PC Play
We’re opening up beta access to PC users for the first time. Please check the minimum specs post here to make sure that your PC is able to run SFV properly. Although the minimum specs will allow you to run SFV on your PC, the recommended specs will ensure you have an optimal SFV experience. PC users gain access to the beta starting October 24th.

PS4 to PC Cross-Platform Play
We will be testing out PS4 to PC cross-platform play functionality on October 24th and 25th. This is a first for us and we are very excited for players across both platforms to finally have a chance to battle one another. Make sure to bring your best strategies as the number of people that you can fight against will be that much larger this time around.