You will want to hodl on and if the chain splits get ready to have the same amount of BTC you currently have on more than 1 chain. Make sure you don't move Bitcoin during this time frame! Follow me for more up to date information and read this as well: https://steemit.com/bitcoin/@bigdeej/bip-91-activated-but-now-bip-141-what-is-going-on-bitcoin
RE: Blockchain and segwit