Can you cast a sorcery speed spell during your opponent's end step if you have Leyline of Anticipation in play?

Leyline of Anticipation states that you may cast spells as though they had flash. Flash (CR 702.8) allows a spell to be cast any time you could cast an instant, bypassing the normal timing restrictions that would otherwise require sorcery-speed spells to be cast during your main phase when the stack is empty.

Sorcery timing (CR 307.1) normally restricts sorceries to being cast during your own main phase while the stack is empty. However, Leyline of Anticipation overrides this restriction for you specifically, letting you cast sorceries (and other non-instant spells you own) at instant speed — including during your opponent's end step.

Your opponent's end step is a valid time to cast instants, so with Leyline of Anticipation in play, it becomes a valid time to cast your sorceries as well. This is especially useful for spells you want resolved right before your opponent's turn ends, giving effects maximum value heading into your turn.

Example: It's your opponent's end step. You control Leyline of Anticipation. You cast Concentrate (a sorcery that draws 3 cards). Because of Leyline, you may cast it as though it had flash, so the cast is legal at this time. You draw 3 cards right before your turn begins.