Of late
Definition 1 of 1
Pro Tip 1/3Time Frame
Indicates something has occurred close to the present time, without specifying when. 
His attitude has shifted of late.
Pro Tip 2/3Vague Period
Use when the exact time is unknown or not important, but it's recent. 
She's been arriving early of late.
Pro Tip 3/3Current Relevance
Best used for situations or changes that are relevant to current circumstances. 
Of late, their team performance has improved.