yeah i've seen that aswell though i'm doublting it massivly the reason is that about a year ago the powers of the studio (i was inside the studio asking btw) stated they are doing one SM codex a year - or near enough. Its an almost golden, cast in stone thing as marines = SHED LOADS OF CASH!
Now re-releasing an already exsiting dex only makes money by introducing new units to the game. Ok a new SM dex could introduce some new models and maybe unit. BUT thats what the other dex's are doing anyway. Plus they acutually generate more £ as the conversion kits are big sellers (the upgrade kits sold like hot cakes for the BT's). Also re doing a codex that is pretty new means that ppl are only going to add in a few new things, an older dex gets more ppl buying more models.
The studio is driven by the business (not ppl wanting changes as some wold love to believe), ok marines are the big seller so you would think a new dex would make more money. Actually thats wrong, the marines will sell regardless of how new or old the dex is. It could be 15 years old and they would still out sell all the other 40k races.
This is why it really feels like mistaken identity and this "SM redux" should read Blood Angles or Space Wolves.
Field Marshall Lord Neil Alister Mackenzie Kerr the Marquess of Lothian
aka Team Scotland 40k Captain 2012