The 2013 Google Panda updates were mostly aimed at Black Hat SEO. I have written about this before on this blog. Never never use Black Hat SEO!! Its never worth it. Black hat is SEO that misleads people into clicking links that really have nothing to do with that website. For example have you ever Searched in Google and clicked on a link for lets say a pink dress and it takes you to a spam website? Thats Black Hat SEO. Or paying for back links. Huge no no. DO NOT pay for back links! I don't care what the person promises you it won't be worth it.
The newest update is that Google is not going to always share keywords used to get to a website. Again this will not effect most of us. Its a very small percentage that will be hidden. The bigger picture is at some point Google is going to make money off those reports instead of letting us all have them for free. But for now I would not waste one minute worrying about it.
Another important change in my opinion is Google is going to start using its "Google Local Business" listings in a much bigger way. They are going to start using that to put weight for relevancy etc on websites and searches etc. So be sure you have your business listed in Google Local Business. And make sure your listing is up to date. Yesterday I went and tweaked my listing and added hubby's business. Click the link above to add yours or update it.
As I posted on the Etsy forum; you are much better off to tweak your listings and descriptions, get better pictures etc than you are worrying about Google changes right now. I am always tweaking something on my Etsy/Ebay shop. Today I tweaked my shop announcement as I didn't realize that some of it no longer fit. Remember that shop announcement is hugely important for your SEO and getting found in Google!!