Make your presentation materials look brand new again. Update the date on the slides that support your presentation. Change the copyright year to the new year to avoid the materials appear to be old.
Refresh the appearance of your presentation by using a different colour, new pictures or a new logo. Simple measures can give a new spirit to your presentation materials making it all look brand new again.
Having old year information in the supporting documentation will make it look outdated immediately for your audience. Check if there is an update available, check links to supporting websites, update © copyright information. Sharing up-to-date information with your audience will evidence that you take care of your audience.
