This article discusses VAT and Apple's price increase, but does not specifically mention what they will do with subscriptions: http://www.forbes.com/sites/timworstall/2015/01/10/apple-changing-apps-prices-in-europe-shows-that-vat-really-is-a-consumption-tax/
We have seen the following emails from Apple:
Dear Wendy, The price of your 1-month Scribd - 1 month free trial subscription has increased from $8.99 to $9.99. This increase will only take effect in future subscription periods, and does not affect your current subscription. Auto-renewal of your subscription has been turned off. To turn auto-renewal back on at the higher price or choose a different subscription period, click below and sign in to your account. -----
Can anyone confirm or refute that this was done on a widespread basis?