Valve have confirmed that the Dota 2 First Blood update will be coming in a few days, landing on September 23rd. Some highlights from the official First Blood source:

. Timbersaw: Fixed Timberchain not being interrupted by stuns
. Pudge: Meat Hook now pulls the target to the initial hook position regardless of where Pudge is
. Fixed being able to instantly toggle Armlet on and off
. Beginning soon, users will be suspended from Dota 2 for 30 days when external . tools attached to Dota 2 are detected by the Valve Anti-Cheat system
. Increased length of forgiveness threshold to reset the severity of communication bans to 3 weeks

There's also a new game mode called Captain's Draft:

This game mode randomly selects 8 str, 8 agi, and 8 int heroes that both teams can choose from
Each team's captain bans 2 heroes (1/1/1/1) out of that list
Each team's captain selects 5 heroes (1/2/2/2/2/1) out of the remaining list
There is a 150 second total time pool for each team to complete all of their bans and selections

Finally, if you love DoTA2, then you are probably aware of the top plays and fail plays that are published weekly by Dota Cinema. You may have missed the following video where people submitted some pretty terrible plays thinking they were worthy of being included in the top plays compilations.

If you haven't played it yet, make sure you read our Dota 2 review to find out what it's all about - it's a free game so you can give it a crack without having to throw down any dollars. But be warned: it is a time sink. promoted/edited forum item