Looks like libass and VSFilter are getting some competition.
According to Microsoft's Gabe Aul, Windows 10 will indeed support SSA, ASS, and SRT natively. For those that are not familiar with the terms above, they are popular and powerful subtitling formats that are often used for fansubbing.
Naturally, the additional support for SSA/ASS/SRT will pair incredibly well with Windows 10's native support for MKV's. Although the official launch of Windows 10 is slated for summer, Microsoft will have a lot of work to do if they are aiming to complete the OS this summer.
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