For the most part, we don't need device-specific tags. They lead to overuse. It's pretty rare for an issue that someone is facing to actually be specific to their device. (People should use tags to help categorize their issue, not their device.)
I've not seen evidence that there's an overabundance of questions where the distinction between the original Nexus 7 and the newer (2013) model is in anyway important.
So, I say: No, we don't need a new tag, nor to rename the old one.
Here's my reasoning:
Nexus 7 (2012) is what Google themselves calls the old device on the Play Store.
A Google search shows 102 million hits for "Nexus 7 2013", versus only 33.8 million for "Nexus 7 2", and a mere 3.5 million for "Nexus 7 2nd generation" so the former is clearly the more common naming.
As per my comment on the question itself, if the differences between those generations justify separate tags, we should handle that similar to samsung-galaxy-tab-2-7 for two reasons:
- easier handling (nobody will stick to the year in the tag, most will even confuse it)
From the samsung-galaxy-tab-2-7 tag wiki: It is the successor to the original Galaxy Tab 7.0 – so we have the same issue here.
so IMHO we should keep the nexus-7 tag as-is, and (if necessary) just add a nexus-2-7 (though I wonder if it shouldn't be
nexus-7-2 for "Nexus 7, 2nd generation", and
Being afraid the year-tagging may lead to confusion, another alternative would be nexus-7-2nd for the 2nd generation. Quoting my reasons from the comments on my other answer:
- People will remember they bought the device in 2013 and use that tag for their 1st gen device.
- For others with the 2nd gen it seems that long ago, they might think it was 2012.
- And the 3rd group just pickst the first tag popping up, being completely confused.
- Add a year more (2015), plus maybe a 3rd generation, and confusion will be even bigger.
nexus-7-gen2 (or, as Flow put it,
nexus-7-2gen) would IMHO still be better than a year "numbering" for given reasons.