If you follow tech updates, then you may pay attention to Steem, EOS, Obsidian, Zcash, Einsteinium and Stellar
One of the major changes in the Velocity Hardfork is a change from our existing Bandwidth system to a new-and-improved system based on Resource Credits (RCs).
The primary goal of the Velocity Hardfork is to change the account creation system in order to lower costs and improve the new user onboarding process.
EOSfinex is a high-performance, decentralised exchange built on EOS.io. technology. A beta version of EOSfinex will be unveiling at Blockchain Live in London, September 26th.
Sapling will activate the Sapling protocol update, bringing orders of magnitude improvements in both time and memory to shielded transaction, making mobile wallet support feasible. Additionally, Sapling will rely on the Powers of Tau open-participation parameter setup, largely mitigating concerns about the parameter setup risks for zkSNARK applications (including other applications outside of Zcash).
EMC2 will fork by changing the mining algorithm from Script to EThash in Q3/2018. Holders of EMC2 will get new coins in 1:1 ratio.
State channels on Stellar livenet + Lightning Network beta.