This is the Nothing Phone (2a) Plus and you should think of it as a more powerful (rather than larger) version of the 5-month-old Nothing Phone (2a), not as its replacement. In fact, both phones will be on sale simultaneously. So what does a Plus warrant? A new 50MP selfie camera (vs 32MP on the regular) and an upgraded chipset - the Dimensity 7350 Plus uses the same design as the Dimensity 7200 Pro, but is overclocked. It may not sound like much, but Nothing claims a 10% faster CPU, and 30% faster graphics performance, which is... well, something. This new Metallic Grey color also...
Source: https://www.gsmarena.com/nothing_phone_2a_plus_in_for_review-news-63927.php
