"PSN Day 1 Digital" program. The difference between the two PlayStation Network initiatives is that while Day 1 Digital is all launch titles, Essentials covers the classics – well, some are classics, others are just old and tired.
Highlights of the of program include the first three Assassin's Creed, Deus Ex: Human Revolution, Far Cry 2 and Infamous. The prices begin at £9.99/€14.99, which may be a tough sell as a "bargain," since you can pick up many of these games for less by walking (ew, who wants to do that?) to the store. The main point here is that Sony continues drawing attention to its digital distribution of full games.
Check out the full list on the PlayStation EU blog, more games will be added this year to the current offerings.