It's not clear if with "no new GSX updates" you mean
1) we haven't said anything new about how the next version of GSX is coming ( the MSFS version )
2 we haven't released any actual updates to the current version of GSX ( the P3D/FSX version )
If you mean #1, we have confirmed multiple times the new version is coming along just fine, we are still missing some functions in the SDK that would make the program easier to use ( and for some Simconnect *bugs* to be fixed as well ), but it's not as if we are not doing anything in the meantime. As confirmed in multiple posts, we are working on remodeling almost all GSX objects and animations, to bring them to the MSFS quality standard. We are confident the things still missing in the SDK will be eventually added and/or fixed, but in the meantime the work is progressing, in the things we can do without having to wait for MS/Asobo.
If you mean #2, we confirmed multiple times there wouldn't be any significant upgrades to the current GSX version (unless users reports bugs which will be confirmed to be bugs), until AFTER we'll release the MSFS version. We are trying to keep code commonality as high as possible, meaning in the future, when the MSFS will come out, new features can be added to both versions.