General Mills is rolling out Strawberry Cheerios for spring and a pumpkin spice version of the venerable cereal this fall.

Both are seasonal offerings, joining a medley of Cheerios iterations that make up the cereal industry's biggest brand.

General Mills has been regularly adding new flavors of Cheerios for the past 25 years or so, and currently has a line-up of 13 varieties. By extending the Cheerios line, Golden Valley-based General Mills helps keep the brand fresh.

However, not all flavors stand the test of time. Multigrain Peanut Butter Cheerios, introduced in 2012, is about to get the ax.

Last year, General Mills dropped another Cheerios flavor launched in 2012: Dulce de Leche. Banana Nut Cheerios, which has been on the shelves since 2009, was shown the door last year, too.