The Ice Lake CPUs suitable for the 13” have been released and they bring some serious performance improvements with them (albeit situational). There are also leaks of Navi 12/14 that might be announced on 7. September. No new CPUs for 15” for a while though. Still, the rumored 16” with faster GPUs could be a nice thing.
This all again puts Apple in an awkward position. If they upgrade the 13” to Sunny Cove this autumn, they will get the 13” that outperforms the 15” in some benchmarks. If they don’t, the competition will be ahead. Curious to see how they respond. At least one of the Sunny Cove SKUs is a 28W part though, a TDP used almost exclusively by Apple, so I wouldn’t be surprised if we see it in a 13” rather soon.