Given a lot of political pressures, i think it's somewhat plausible for there not to be any model called GPT-5, that openAI just releases upgraded ChatGPTs. Maybe they work only on multimodal models from now on and never release any pure large language model again, etc.

Will there be a large language model titled officially as GPT-5 released by OpenAI?

In case OpenAI splits up etc, i will make changes at the time to reflect the resolution criteria better.

i think it's less likely that they release it named as a GPT-5 if they're moving away from pure language models, but if they do release a multimodel GPT-5, then it counts