Here's a list of new problems in OG13th according to MGMAT:

Problem Solving: 12, 13, 14, 15, 37, 49, 56, 57, 60, 61, 69, 71, 75, 77, 78, 79, 80, 81, 91, 92, 108, 110, 112, 113, 114, 117, 118, 119, 127, 128, 129, 137, 158, 163, 166, 170, 177, 178, 182, 183, 196, 198, 199, 218, 229

PS Fractions, Decimals, & Percents: 15, 56, 57, 71, 80, 108, 113, 114, 163, 170, 177, 182, 198, 218

- Digits & Decimals: 163, 170, 218

- Fractions: 15, 80, 108

- Percents: 57, 71, 114, 177, 182, 198

- Ratios: 56, 113

PS Algebra: 14, 37, 117, 129, 196, 199

- Linear Equations: 14

- Exponents & Roots: 196

- Quadratic Equations: 37, 117, 199

- Formulas: 129

PS Word Problems: 12, 49, 60, 79, 81, 91, 112, 119, 137, 158, 178, 183

- Algebraic Translations: 60, 137

- Rates & Work: 49, 79, 81

- Statistics: 12, 91, 112, 119, 183

- Consecutive Integers: 158

- Overlapping Sets: 178

PS Geometry: 13, 61, 69, 75, 78, 92, 166

- Polygons: 13, 78, 166

- Triangles & Diagonals: 75, 92

- Circles & Cylinders: 69

- Coordinate Plane: 61

PS Number Properties: 77, 110, 118, 127, 128, 229

- Divisibility: 77, 110, 118, 127

- Positives & Negatives: 229

- Combinatorics: 128

Data Sufficiency: 11, 15, 18, 20, 22, 23, 24, 25, 29, 32, 33, 34, 37, 39, 41, 42, 52, 57, 65, 70, 74, 75, 79, 80, 83, 85, 92, 96, 97, 99, 102, 109, 123, 131, 133, 141

DS Fractions, Decimals, & Percents: 23, 25, 29, 75, 80, 92, 131, 133

- Digits & Decimals: 75, 80, 133

- Fractions: 29, 92, 131

- Percents: 25

- Ratios: 23

DS Algebra: 15, 24, 33, 41, 52, 85, 96, 99

- Exponents & Roots: 15, 41

- Quadratic Equations: 99

- Formulas: 24, 96

- Inequalities: 33, 52, 85

DS Word Problems: 18, 20, 22, 34, 37, 57, 65, 70, 109, 123, 141

- Algebraic Translations: 57, 65, 141

- Rates & Work: 22

- Statistics: 20, 37, 70, 109, 123

- Consecutive Integers: 18

- Overlapping Sets: 34

DS Geometry: 11, 42, 74, 79, 102

- Polygons: 42

- Triangles & Diagonals: 79

- Circles & Cylinders: 102

- Coordinate Plane: 11, 74

DS Number Properties: 32, 39, 83, 97

- Divisibility & Primes: 83

- Positives & Negatives: 97

- Odds & Evens: 32

- Probability: 39

Reading Comprehension: 1, 2, 3, 4; 11, 12, 13; 14, 15, 16, 17; 37, 38, 39, 40, 41; 52, 53, 54, 55; 84, 85, 86; 111, 112, 113, 114 (passages separated by semicolons)

7 new passages

- Length: 2 long, 5 short (3 of the shorts are just 1 big paragraph, though!)

- Themes: 2 biological science, 2 business, 2 social science, and 1 physical science

Question types:

7 General questions (4 Main Idea, 3 Structure) – roughly 1 per new passage

20 Specific questions (8 Detail, 12 Inference) – roughly 3 per new passage

Since you’d never do all the questions of 1 type at once (you always do RC by passage), there’s little point in breaking them out by number.

Critical Reasoning: 1, 3, 6, 8, 9, 11, 12, 17, 19, 22, 29, 33, 39, 49, 59, 65, 69, 74, 81, 86, 94, 100, 106, 114, 124

- Assumption: 106

- Evaluate the Argument: 114, 124

- Flaw: 8, 100

- Strengthen: 1, 11, 19, 29

- Explain the Discrepancy: 3, 6, 9, 17, 22, 49, 86, 94

- Complete the Argument: 12, 33, 39, 59, 65, 69, 74, 81

Sentence Correction: 1, 2, 4, 7, 9, 15, 19, 26, 35, 38, 40, 48, 56, 65, 68, 71, 74, 79, 87, 97, 107, 111, 114, 132, 138

- Subject-Verb Agreement: 7

- Parallelism: 4, 15, 38, 56, 74, 79, 87, 138

- Pronouns: 111, 114

- Modifiers: 1, 19, 35, 48, 65, 68, 132

- Verbs: 40, 71

- Comparisons: 9, 107

- Connecting Punctuation: 2, 26, 97

Here's the full article:

http://www.manhattangmat.com/blog/index.php/2012/03/20/manhattan-gmats-analysis-of-the-13th-edition-official-guide/