Based on ShadowStar's info, here is the Monk BAB chart, with and without Flurry. I've also included new and old unarmed damage, and Special abilities.
<table width="90%" border="1" style="color: #FFFFCC; font: x-small"><tr><td><b>Level</b></td><td><b>Monk BAB</b></td><td><b>Monk BAB w/ Flurry of Blows</b></td><td><b>New Unarmed Damage</b></td><td><b>Old Unarmed Damage</b></td><td><b>Special</b></td></tr><tr><td>1</td><td>+0</td><td>-2/-2</td><td>1d6</td><td>1d6</td><td>Bonus Feat(Improved Grapple or Stunning Fist), Flurry of Blows, Unarmed Strike</td></tr><tr><td>2</td><td>+1</td><td>-1/-1</td><td>1d6</td><td>1d6</td><td>Bonus Feat(Combat Reflexes or Deflect Arrows), Evasion</td></tr><tr><td>3</td><td>+2</td><td>+0/+0</td><td>1d6</td><td>1d6</td><td>Still Mind</td></tr><tr><td>4</td><td>+3</td><td>+1/+1</td><td>1d8</td><td>1d8</td><td>Ki Strike (Magic), Slow fall 20'</td></tr><tr><td>5</td><td>+3</td><td>+2/+2</td><td>1d8</td><td>1d8</td><td>Purity of Body</td></tr><tr><td>6</td><td>+4</td><td>+3/+3</td><td>1d8</td><td>1d8</td><td>Bonus Feat(Improved Disarm or Improved Trip), Slow fall 30'</td></tr><tr><td>7</td><td>+5</td><td>+4/+4</td><td>1d8</td><td>1d8</td><td>Wholeness of Body</td></tr><tr><td>8</td><td>+6/+1</td><td>+5/+5/+0</td><td>1d10</td><td>1d10</td><td>Slow fall 40'</td></tr><tr><td>9</td><td>+6/+1</td><td>+6/+6/+1</td><td>1d10</td><td>1d10</td><td>Improved Evasion</td></tr><tr><td>10</td><td>+7/+2</td><td>+7/+7/+2</td><td>1d10</td><td>1d10</td><td>Ki Strike (Lawful), Slow fall 50'</td></tr><tr><td>11</td><td>+8/+3</td><td>+8/+8/+3/+3</td><td>1d10</td><td>1d10</td><td>Diamond Body, Greater Flurry</td></tr><tr><td>12</td><td>+9/+4</td><td>+9/+9/+4/+4</td><td>2d6</td><td>1d12</td><td>Abundant step, Slow fall 60'</td></tr><tr><td>13</td><td>+9/+4</td><td>+9/+9/+4/+4</td><td>2d6</td><td>1d12</td><td>Diamond Soul</td></tr><tr><td>14</td><td>+10/+5</td><td>+10/+10/+5/+5</td><td>2d6</td><td>1d12</td><td>Slow fall 70'</td></tr><tr><td>15</td><td>+11/+6/+1</td><td>+11/+11/+6/+6/+1</td><td>2d6</td><td>1d12</td><td>Quivering palm</td></tr><tr><td>16</td><td>+12/+7/+2</td><td>+12/+12/+7/+7/+2</td><td>2d8</td><td>1d20</td><td>Ki Strike (Adamantine), Slow fall 80'</td></tr><tr><td>17</td><td>+12/+7/+2</td><td>+12/+12/+7/+7/+2</td><td>2d8</td><td>1d20</td><td>Timeless Body, Tongue of the sun and moon</td></tr><tr><td>18</td><td>+13/+8/+3</td><td>+13/+13/+8/+8/+3</td><td>2d8</td><td>1d20</td><td>Slow fall 90'</td></tr><tr><td>19</td><td>+14/+9/+4</td><td>+14/+14/+9/+9/+3</td><td>2d8</td><td>1d20</td><td>Empty body</td></tr><tr><td>20</td><td>+15/+10/+5</td><td>+15/+15/+10/+10/+5</td><td>2d10</td><td>1d20</td><td>Slow fall any distance</td></tr></table>
edit: According to the Wizards Chat, the extra flurry attack is at -5 (which makes sense).