"Prepare" is way too lax. Many will treat it like stick-it note "oh, I have to make sure someday, shall the transition come, my code won't require major rewrite

"Prepare" is way too lax. Many will treat it like stick-it note "oh, I have to make sure someday, shall the transition come, my code won't require major rewrites". Like "preparation" for IPv6 support frequently ends with adding more bits to DB fields and adding several stub functions. Unless you actually get your hands dirty and start doing something, not just preparing, there won't be any significant results. Sure, FSF is quite radical with "and abandon H.264" part, but "distribute videos in the WebM format" part is perfectly fine.