No "Release the Kraken!?". That's my go to
The PCI-SIG release is here. The electromechanical specification is also due to be released shortly:The new released doubles the signalling rate from 2.5Gbps to 5Gbps. The upshot: a x16 connector can transfer data at up to around 16GBps.
"The companion PCI Express Card Electromechanical 2.0 specification is currently at revision 0.9, having completed its 60-day member review. The PCI-SIG anticipates that this specification too will be released in the near future.
Their idea of an offer you can't refuse is an offer... and you'd better not refuse.