0.13.1 will be release soon (1 to 2 weeks), that date is just one of the requirements that must be met before segwit activates.

RC1 will come out in a day or so oonce they go through the gitian process.

LN is coming around nicely where all the implementations have standardized Interoperability and Specifications for compatibility -
https://bitcoinmagazine.com/articles/after-scaling-bitcoin-a-lightning-winter-release-is-now-within-reach-1476814566