updated version A350neo and possibly A350neo Freighter. Drop A330neo and A380 in mid 2025.
I don't think the A350 alone is enough, if they drop the A380. There might be a need to have a larger aircraft (than the A350-1000) in the A350 family. That is why they are beginning to market the A330Neo/A350 as a "family". The A330Neo will cover the lower end of the market while A350 will cover the larger capacity and higher performance market.
Naturally that should have happen if they eliminate A330neo or thr Toubled A380. Revival of A350-800 with 2 variants, the long-haul one with newer and more efficient engines and/or a regional one with lower MTOW and derated engines to replace A330 with range around 6000nm give or take.
They could also come up with highly speculative model of A350-2000 (4m stretches) or modifications on A350-1000 with a tiny stretch of 1-2 meters with higher MTOW and newer more efficient engines to replace the old A350-1000. This would be easier and cheaper to done compared to do heavy modifications for 77 meters A350-2000. Just to make sure the passengers capacity became closer to 10-abreast B777-300ER.
Mainly because we saw that until now, most airlines love 10-abreast B777-300ER. But not as many order the bigger B777-9X. The size and the fact that many B777-300ER are still extremely young. So, A 350-2000 might be a bit overkill since the capacity is quite close to B777-9X. By giving A350-1000 a smaller 1-2 meter stretch, it would bring the capacity closer to 10-abreast B777-300ER. If the plane comes in 2025-2030, it would mean that the very first batch of B777-300ER would be ready to retired, and a stretched A350-1000 would be a better replacement compared to A350-2000 or B777-9X.