Ever since we launched our new E-junkie Shopping Cart version 2 a couple years ago, we got a lot of feedback from our sellers and decided to take things to the next level and have now launched our latest Shopping Cart version 3.
If you wish, you can explore our new cart customization settings in you E-junkie Dashboard under Manage Cart & Shop > Cart Preferences. You can also enable the new cart for your account early, via the Try New Features button in the top header of your E-junkie Dashboard (if you don't see this button, you've already been using our new cart all along). Once you enable the new cart there, just reload your site's sales page in your browser to try it out; if you see anything strange, you can just re-disable the new cart again until May 28th, but do let us know about any problem you find, so we can fix it before then.
Our classic cart v.1 (circa 2004-2014) will be deprecated effective May 28th, 2019; you will not need to do anything to enjoy the automatic upgrade to our new cart v.3 as of that date, after which our classic cart will no longer be maintained.
If you believe you might need to continue using our classic cart for cart customization or any other particular reason you're aware of, please contact us for consultation. If you're not sure about any reason to stick with the classic cart, the automatic upgrade to our new cart will almost certainly go perfectly well for you, so no worries.