If you don't like to have fun or learn new things, then stay away from Greenville. Tickets to UNSPAM (Jan 27-28) just went on sale.
Product update and new feature emails act as announcement emails that catch the audience's attention. These emails showcase an exclusive look at introducing an updated product or feature. If you're building an email sequence, these emails will usually fall in the middle of the sequence, after a teaser email and before the product or feature release.