SWF version 8 specs, which includes FLV specs as usual, were released earlier today.
FLV format is better documented this time and includes data packet format.
Most annoying part for me was Acrobat Reader 6 requirement, as I only have v5 and normally wouldn’t install bloated later versions. Good news is that Adobe has the download for v6.01 and doesn’t force you to download the latest version. Still for Windows it’s a 15.9MB (!) download, probably I’ll install it on a separate machine first to see what baggage it has.
We will be releasing updates to our software as soon as possible after revising them according to the newly released specs.