The new rates from the IRS are now out for mileage reimbursement when driving your own vehicle for business, charity, and/or medical/moving purposes. Please look for a new release of MileBug containing these rates in the next week or so, depending on Apple's review process.
Business: 56.5 cents/mile
Charity: 14 cents/mile
Medical/Moving: 24 cents/mile
Charity: 14 cents/mile
Medical/Moving: 24 cents/mile
Both the business and medical/moving rates went up 1 cent/mile while the charity rate remained the same. For more information, you can refer to the official IRS announcement.