Possible Clues:

• More wet behind the ears
• More markedly different than before; not so old
• Set one's heart on a jug of more modern style
• Like a 2011 model, say
• Fresher turned up in lecture, we noted
• Having a higher model number, say
• Later, when we're forced to get to the point
• Having a higher serial number
• More recent
• Of more recent vintage