I've been looking to get a new laptop. I am deciding between a cheaper Thinkpad E series and the more expensive T series, but I don't really want to pay extra f

I've been looking to get a new laptop. I am deciding between a cheaper Thinkpad E series and the more expensive T series, but I don't really want to pay extra for a laptop mediocre battery life and no second battery option, not to mention some of the limitations on these early AMD Lenovo products. The 7nm chip looked interesting because it would likely have better battery life for the same or better performance, and having a graphics uplift would certainly make waiting and getting a "better" laptop more compelling. However, if it's going to get the essentially same graphics as current chips, maybe I'll get the cheaper model now with an external battery pack and expect to upgrade in 2-3 years when AMD/Lenovo fix some of the other issues (limited memory clocks, no Thunderbolt, thermal caps, etc). And who knows, maybe they'll have an 8-core option by then! Have these kinds of "leaks" been reliable in the past?