Adobe released the August 2019 version of Lightroom Classic and ACR with several improvements including GPU Accelerated Editing:
The latest Adobe CC subscription plan rates can be found here (see also this page). A free Lightroom CC trial is available on this page (no credit card required). More information on the different Lightroom versions is available here and here. The different Adobe Creative Cloud options are described here.
For Adobe alternatives check the latest products from Topaz Labs, Skylum and ON1.