2.5.0

1. IRC server tunnels
2. SOCKS outproxy
3. Compressed addressbook downloads
4. Router families
5. Shared RTT/RTO between streams
6. New filesystem code

2.4.0

1. New configuration parameters system
2. X-I2P-* headers for HTTP server tunnels
3. I2CP options for I2P tunnels
4. Show I2P tunnels in webconsole

2.3.0

1. Support new bandwidth codes ('P' and 'X')
2. I2PControl supports WebUI
3. -pidfile and -notransit parameters
4. Fixed multiple floodfill-related bugs
5. New webconsole layout
6. Ability to specify signature type for I2P tunnel

2.2.0

1. Connect to router without IP through introducer
2. Persist temporary encryption keys for local destinations
3. More performance improvements for EdDSA
4. New addressbook structure

2.1.0

This is the second 2.x.x release, using openssl for cryptography.

1. Complete and fast implementation of EdDSA
2. EdDSA is default signature type for new RouterInfos now.

0.10.0

1. HTTP server tunnels
2. Proper RTT/RTO handling for streaming
3. Profiling
4. Multiple bug fixes for crashed and memory leaks

0.9.0

1. Automatic firewall/NAT detection
2. Stats report for floodfiil
3. Local ports support for destinations
4. White list and port for server tunnels

0.8.0

1. Reseed through HTTPS
2. Multiple client and server I2P tunnels
3. Fixed memory leak in floodfill mode

0.7.0

1. Floodfill
2. Improved streaming (transmission window, congestion control, slow start, RTT)

0.6.0

1. Addressbook subscriptions
2. SOCKS5 proxy
3. UPnP
4. 2048 bits ElGamal private keys