And tbh we all know once Canon finished their lineup, Sigma will get the green light so it'll be a win for everyone. (unless a GAS Sony fan ;p
Canon haven't released a version 2 of any RF lens so far in the last ~7 years. I consider the Z lenses to be a completely different segment to the 24-105 or 70-200mm options ie non-L, L and Z lenses.
The range of f1.4 primes are filling out the mid-price market which is good to see though. Video features are taking on a greater significance.
The current "holes" in their lineup vs EF are niche areas now:
- fast /wide => 20/1.4 could be their only option or perhaps the start of a wider range. The EF14/2.8 was expensive and not great.
- zoom fisheye
- long macro to replace EF180mm
- RF200-500 in whatever form it eventually comes in
- "cheaper" big white primes eg 500/5.6
- TS-E replacements
- super-macro replacement to MP-E65 5x macro
Will they release new ones next or start improving existing ones is hard to say.
The other OEMs have shown improvements (cost/size/weight) to some of Canon's iconic RF lenses already.
In the EF days, there was a combination but this covers 1987-2019 ie ~30 years.