The SH Figuarts Hall of Armor is expanding to include the Mark 5 "Suitcase" suit later this year. The Mark 5 was seen in Iron-Man 2 when Tony was attacked on the Monaco Race Track by Whiplash. He will be packed with the suitcase accessory.
The suit will be a Bandai Collectors Shop Exclusive, but I suspect Bluefin may pick this up for a US release in one way or another - and if it goes on sale in US then a UK option or import is then also a possibility. In Japan it looks to be shipping in October 2017, but expect pre-orders to go up soon.
