Hardware
HD+ compatibility for DVB-C (cable), DVB-S (sat) and DVB-T2 products (CI+ slot and software support)
(There is a legacy product – EyeTV 610 – which had a CI slot. CI+ is needed nowadays.)
Software
full 64-bit applications with the ability to use larger memory buffers
built the features of Turbo.264 into EyeTV (users have powerful CPUs today) or possibility of a Handbrake integration (for the more sophisticated tasks)