If you can, and since Bezhad has indicated that a new version will be out in less than a month, wait until the dust has settled in August or September before renewing. Then, you should be able to get version 19 if it comes out within a year. Make sure to always download the contents of the Content Catalogue that is, obviously, on line, before the next expiry rolls around.
noted and thanks to all
btw - my catalog does not say online - it says content catalog :P