Full screen WebGL is being held up by security concerns. The browser vendors are eager to get it in as soon as they settle on how to make it difficult to exploit.

FLAC is great and all, but you only save about 30%. That's a significant help, but it's not a killer feature in my opinion. Uncompressed WAV format (RIFF storing PCM) has one significant advantage: it is such a trivially simple file format that any junior programmer can write a parser for it in an afternoon. fread(), a pointer cast, a linked list traversal and there's the bits. You don't need any libraries other than standard file I/O. That makes future support and migration a zero-risk proposition.

A nice feature of audio is that our requirements are scaling much slower than our tech. It takes about 100K to store one second of one channel of 16 bit, 48 Khz uncompressed audio. People will always argue about how many channels they need or if 96Khz is actually any better, but we aren't going to see real demand for 10X storage/bandwidth requirements for audio in the foreseeable future. Meanwhile storage and bandwidth are going to continue to get cheaper by factors of 10.

I expect FLAC to go the way of Stacker. It's a great tech that helps bridge the gap between the time when it was just too expensive to store so much data and the near future when it will be so cheap that it doesn't make sense to bother compressing it. I loved Stacker back when I had my first (5 gig) hard drive. Now that I'm pushing a terabyte, it would be silly to put up with the risks and the hassle of drive compression.