The 0.8.12 release fixes several serious message corruption bugs. It also contains a redesign of the router's congestion control, and continued optimization of CPU and memory usage. We are hopeful that these changes will improve network performance. Upgrading is recommended.
Say hello to the volunteers on the #i2p-help IRC channel. Get involved, spread the word, and donate! If you find a bug, please enter a report on trac. To help on translations, volunteer on IRC #i2p-dev or sign up on Transifex.