Well we certainly know season 2 will be more red (I'm pleased with some colour variations among all the black spines), but the size of the SHIELD logo and placement of the title appear to be the same as season 1.
To be honest, as these are embossed, it would probably be easier to just keep the same embossing across each season. It would be cheaper I should think.
Mine just arrived today in that brown A1 mailer people have been talking about. This is actually the first time I've ever received a steelbook from @zavvi in that kind of packaging. Thankfully, no issues with the steelbook. Everything looks good even under the jcard.