These new versions bring many improvements and fixes, such as tail spillover, hi-res graphics, improved bypassed, improved presets navigation... This free update is definitely recommended!
As usual, download updates from the same location as the original full versions (link received by email). Re-introduction offers are available to new customers (up to 23% off) until November 5th, don't miss them! And if you are an existing Blue Cat Audio customer, you should receive even better deals by email shortly.