A 43" monitor!? I'd need a neck brace after a day with that! Not sure why you'd need thunderbolt ports on a monitor but a TV is your best bet if you somehow need a window sized display in your face. Not really much movement in a 5K display as it's an odd standard that only really applies to Apple, so there could be something but it'd be latest tech. So if there's nothing now you'll be waiting until CES next year when anything would come about.