Quoting myself to specify: only 4 Mellotron presets. Three other new instruments (CZ, Synthi and Pigments) each add 20 or so, for a total of only 61 added presets from Analog Lab 3 to Analog Lab 4.
Definitely less generous than the Analog Lab 3 upgrade was, adding over 1500 presets to the ones in Analog Lab 2, and including all presets of every V Collection 6 instrument. Those are still present in Analog Lab 4, but the newly added instruments from V Collection 7 are seriously underrepresented.
On the bright side, more effects and better live / layer action.