Epson is never mentioned in the linked blog post, it says those are HP ink cartridges.
Also according to original story those are only from 2010 and 2012 + another model added for comparison: HP 350/2010 (left), HP 350/2012 (center), HP 301/2012 (right).
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Epson went even further: http://pryf.livejournal.com/1829152.html
It's in Russian, but look at the pics: it's the same cartridges made in 2010, 2011 and 2012.
Epson is never mentioned in the linked blog post, it says those are HP ink cartridges.
Also according to original story those are only from 2010 and 2012 + another model added for comparison: HP 350/2010 (left), HP 350/2012 (center), HP 301/2012 (right).
Original non-blogspam article in English: http://www.hpinkcartridges.co.uk/technology-blog/2012/05/hp-...