That's right! Spigiot has released Bukkit, CraftBukkit, Spigot-API and Spigot server for Minecraft 1.8! "when will pwn9 update?" We don't have an exact answer to that right now. Wolvereness has already indicated he is going to serve spigot with a DMCA takedown notice. We are monitoring this and may choose to not update. Additionally We have plugin testing to do to see what plugins still work and which ones are broken. Due to the pending Takedown notice from Wolvereness, some plugin developers have chosen not to update their plugins. All of these things have the ability to hinder our ability to update.
On that note, I'm happy to report that Tremor and Sage are hard at work updating their plugins (some of which are already good-to-go!).