According Strictly Limited Games:
Besides the stand-alone collections – the first one being irem Collection Volume 1 – featuring three shoot ’em up titles totalling five games, we’d also like to offer an opportunity and convenience for video game enthusiasts and collectors which are interested in a complete approach. We’ve also added something extra to sweeten the deal: All five volumes, for each platform respectively, will be available for pre-order as a bundle in an exclusive slipcase. Even better, the Collector’s Edition bundles will feature an exclusive bonus item! Details for both design and item type are to be confirmed.
irem Collection Volume 1 is set to start shipping Q4 2023, while the bundles including Volume 1 – 5 will be released and shipped once the last volume is ready. Please, find detailed timing at each bundle store listing respectively.
R-Type is one of my favorite IREM games.